H

Select a term to view the definition:
  • H. pylori infection

    Professional Description:

    Helicobacter pylori (H. pylori) is a spiral-shaped bacterium that is found in the gastric mucous layer or adherent to the epithelial lining of the stomach.

  • H2 receptor antagonists

    Professional Description:

    These medications block the production of acid from the stomach

  • Half and half nails

    Professional Description:

    A division of the nail by a transverse line into a proximal dull white part and a distal pink/brown part.

  • Health Equity

    Professional Description:

    Health equity is having a fair opportunity to attain full health potential without disadvantages or barriers from achieving this potential.

  • Health literacy

    Professional Description:

    The ability to access and understand health information as well as use the information to improve health of self, family and community. The ability to read and write is not required to access and use health information.

  • Healthism

    Professional Description:

    The preoccupation with personal health as a primary, often the primary, focus for the definition and achievement of well-being. A goal which is to be obtained primarily through the modification of personal lifestyles.

    Sources:
    Hunger JM, Smith JP, Tomiyama AJ. An Evidence‐Based Rationale for Adopting Weight‐Inclusive Health Policy. Soc Issues Policy Rev. 2020 Jan;14(1):73-107.
    Overend A, Bessey M, Hite A, Noriega A. Introduction to against healthisms: Challenging the paradigm of “eating right.” J Crit Diet. 2020;5(1):1-3.

  • Helminth parasites

    Professional Description:

    Worms classified as parasites and include roundworms (e.g. Trichinella), pinworms, tapeworms and flukes.

  • Hematological Malignancies

    Professional Description:

    Cancers of or relating to the blood.

  • Hematopoietic Stem Cell Transplant

    Professional Description:

    A procedure in which precursor cells capable of developing into normal bone marrow are delivered to an individual; typically performed as part of therapy to eliminate a bone marrow infiltrative process, such as leukemia, or to correct genetic immunodeficiency disorders.

    Source: Powell J, Hingorani P, Grupp S, Kolb E. Hematopoietic stem cell transplant. eMedicine. Abstract available from: http://emedicine.medscape.com/article/204821-overview

  • Heme

    Professional Description:

    The deep red iron-containing prosthetic group C34H32N4O4Fe of hemoglobin and myoglobin that is a ferrous derivative of protoporphyrin and readily oxidizes to hematin or hemin.

  • hemochromatosis

    Professional Description:

    An hereditary disease caused by increased absorption and excessive storage of iron in the tissues, especially the liver; the untreated disorder can lead to cirrhosis of the liver, heart disease, diabetes mellitus, testicular atrophy, and arthritis

  • Herbal products

    Professional Description:

    The word herb comes from the Latin word for grass. Technically, herbs are plants that wither each autumn, plants other than shrubs or trees. When used as a natural health product, herbs are plants with medicinal value.

  • Heritability

    Professional Description:

    The proportion of observed variation in a particular trait (as intelligence) that can be attributed to inherited genetic factors in contrast to environmental ones.

  • Herpes

    Professional Description:

    Herpes is a popular, ulcerative or vesicular eruption of skin or mucous membranes caused by a local infection with herpes virus 1 or 2 (herpes simplex) or by the reactivation of the varicella-zoster virus.

  • Herpes labialis

    Professional Description:

    Herpes labialis is herpes simplex that affects the lips and nose.

  • High intensity intermittent exercise

    Professional Description:

    Exercise that consists of alternating bouts of high and low intensity exercise. This type of exercise is seen in interval training and also “stop and go” type sports like soccer, hockey, football, basketball and rugby where fast sprints are interspersed with lower intensity phases.

  • High risk for allergy

    Professional Description:

    An infant with a strong (biparental; parent, and sibling) family history of allergy; an infant with documented hereditary atopy risk (an affected parent or sibling).

  • Hirsutism

    Professional Description:

    The presence of excessive body and facial terminal hair, in a male pattern, especially in women.

  • Histamine

    Professional Description:

    Histamine is a chemical present in cells throughout the body and is an essential neurotransmitter in a variety of processes. It is responsible for the release of gastric acid during digestion. Histamine is released during an allergic reaction and is one of the substances responsible for the symptoms of inflammation. It is the major reason for running of the nose, sneezing, and itching in allergic rhinitis. It also contributes to the narrowing of the bronchi (airways) in the lungs in asthma.

  • Homozygous

    Professional Description:

    Having the two genes at corresponding loci on homologous chromosomes identical for one or more loci.

  • Human Genome

    Professional Description:

    The complete genetic content (the complete set of genes) of a human.

  • Hydrops Fetalis

    Professional Description:

    hydrops fetalis is an abnormal fluid accumulation in the foetus in two or more compartments, such as ascites, pleural effusion, pericardial effusion and skin edema.

    Source: Hamdan AH. Pediatric Hydrops Fetalis. Emedicine. 2017 Jul . Available from: https://emedicine.medscape.com/article/974571-overview

  • Hypercalciuria

    Professional Description:

    Clinically defined as urine calcium greater than 250 mg for 24 hours (6.2 mmol/day). Hypercalciuria is the most common abnormality associated with calcium oxalate stones.

  • Hyperemesis gravidarum

    Professional Description:

    Persistent vomiting that leads to weight loss greater than 5% of pre-pregnancy weight, with associated electrolyte imbalance and ketonuria, occurring in about 1% of pregnancies.

  • Hypersensitivity

    Professional Description:

    Presence of objectively reproducible symptoms or signs, initiated by exposure to a defined stimulus at a dose tolerated by normal subjects. Includes both immunologically and non-immunologically-mediated mechanisms

  • Hypertension

    Professional Description:

    Hypertension is abnormally high pressure in the arteries with a systolic pressure at rest that averages 140 mm Hg or more and/or a diastolic pressure at rest that averages 90 mm Hg or more.

  • Hypodermoclysis

    Professional Description:

    Hypodermoclysis, also known as clysis, is the infusion of isotonic fluids into the subcutaneous space for rehydration or for the prevention of dehydration.

  • Hypoglycemia

    Professional Description:

    A state in which an individual has a low plasma glucose level (less than <4 mmol/L), experiences typical symptoms (trembling, palpitations, sweating, anxiety and/or neuroglycopenic symptoms- difficulty concentrating, confusion, weakness, dizziness, fatigue), and attains relief with the administration of a carbohydrate.

  • Hypokinesia

    Professional Description:

    Decreased movements

  • hypospadias

    Professional Description:

    A birth defect with the penis opening on the underside of the organ.

  • Hypotension

    Professional Description:

    Hypotension is systolic blood pressure <100 mmHg with associated symptoms (including syncope, dizziness, weakness or fatigue.

    Source: Akosah KO, McHugh VL, Mathiason MA, Kallies KJ, Pinter R, Thayer VB. Closing the heart failure management gap in the community: managing hypotension and impact on outcomes. J Card Fail. 2009 Dec;15(10):906-11. doi: 10.1016/j.cardfail.2009.06.438. Epub 2009 Aug 5.